Elon Musk believes the second test tank could perform significantly better if pressurized with a cryogenic liquid. The steel will cryogenic harden when exposed to extremely cold temperatures which will make it stronger.
Starship 9 meter test tank made 7.5 bar at room temp. It had a small leak at a weld doubler. It will be repaired and retested at cryogenic temperatures.
SpaceX’s second Starship test tank has 125% safety margin.
Elon says SpaceX can immediately start building the first Starship for spaceflight.
Starship 9m test tank made 7.5 bar at room temp! Small leak at a weld doubler. Will be repaired & retested at cryo. pic.twitter.com/Bz3lrwkYRU
— Elon Musk (@elonmusk) January 27, 2020
Parent material strength roughly doubles, so weld strength is the only real question mark
— Elon Musk (@elonmusk) January 28, 2020
Liquid nitrogen cryogenic strength test underway
— Elon Musk (@elonmusk) January 29, 2020
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